<a href="./index">
    <div class="button {@if onWhich == 0}on{@/if}">
        <section></section>
        <span>收件</span>
    </div>
</a>
<a href="./sendList">
    <div class="button {@if onWhich == 1}on{@/if}">
        <section class="second"></section>
        <span>发件</span>
    </div>
</a>